假定编写了如下事件过程: Private Sub Form MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As SinglE)If Button And 2 T

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问题 假定编写了如下事件过程:    Private Sub Form MouseDown (Button As Integer, _    Shift As Integer, X As Single, Y As SinglE)If Button And 2 Then          Print "AAAA"       End If    End Sub程序运行后,为了在窗体上输出AAAA,应按下的鼠标键为______。

选项 A、左
B、右
C、同时按下左、右
D、按什么键都不显示

答案B

解析
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